Windows 7 running slow after installing the new Softwares

Hi, I have problem when i install the below softwares, the system is slow, our manager is not accepting that the system is slow because of hardware configuaration.The laptop has 2 GB RAM core to duo processor below softwares are installaed in the laptopms sql 2008 r2, sap b1 9.4, ms office 2007, ms visio, kasperskey total security 2013, skype, winrar, ip messangerPlease do the needful.